Steam-boiler furnace



No. 6I9,563. Patented Feb. l4, I899. E. E. GORDON.

STEAM BOILER FURNACE.

(Application filed. Apr. 29, 1898.)

{No Model.)

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UNITED STATES PATENT OFFICE.

EDWARD E. GORDON, OF NEWARK, OHIO.

STEAM-BOILER FURNACE.

SPECIFICATION forming part of Letters Patent No. 619,563, dated February14, 1899.

Application filed April 29, 1898. Serial No. 679,238. (No model.)

To all whom it may concern:

Be it known that I, EDWARD E. GORDON, a citizen of the United States,residing at East Newark, in the county of Licking and State of Ohio,have invented new and useful Improvements in Steam Boiler Furnaces, ofwhich the following is a specification.

This invention relates to steam-boiler f urnaces, and has for its objectto provide a furnace of simple construction and which shall be easilyaccessible for inspection, repair, and for the purpose of cleaning andwhich in operation will effect an economy in the consumption of fuel andan equal distribution of the heat to the boiler.

To these ends my invention consists in the features and in the novelconstruction, combination, and arrangement of parts hereinafterdescribed, and particularly pointed out in the claims following thedescription, reference being had to the accompanying drawings, forming apart of this specification, wherein Figure 1 is a vertical longitudinalcentral sectional view of my improved steam-boiler furnace. Fig. 2 is atransverse sectional view taken on the line 2 2 of Fig. 1, showing thehot-'air outlets in the rear of the bridge-wall. Fig. 3 is a similarview on the line 3 3 of Fig. 1, and Fig. 4 is a similar view on the line4 4 of the same figure.

Referring to the drawings, the numeral 1 indicates the furnace-walls,and 2 a boiler of any usual or suitable construction supported therein.Under the forward end of the boiler is arranged a fire-box 3, at therear end of which is the bridge-wall 4. In the bridgewall 4 is formed avertical flue 5, which at its upper end communicates with a horizontalflue 6, that is in connection with the fire-flue 7 by means ofaplurality of apertures 8. Connected with the lower end of the flue 5 isa hot-air duct 9, which extends rearwardly over the bottom of thefurnace-pit 10, and at its rear end is provided with an air-inlet 11.Projecting through the air-inlet 11 into the air-duct is asteam-jetnozzle 11, which when in use is supplied with steam from the boiler.Arranged in rear of the bridge-wall 4 is a baffle-wall 12, constructedin the form of an arch that extends over the fire-pit between the sidewalls of the furnace. The baffle-wall 12 extends up to within a veryshort distance of the bottom of the boiler and is curved on top toconform to the shapethereof, leaving a contracted space 13 for theuninterrupted escape of the lighter burned gases.

Arranged in the rear of the baffle-wall is a checker-work partition 14,formed of firebricks so arranged as to form numerous tortuous passagesbetween the bricks, and in rear of the rear end of said partition is avertical wall 15, between which and the partition is a narrow flue 16..As shown, the upper end of the wall 15 extends slightly below the top ofthe partition 14, and in rear of the wall 15 is a flue 17, communicatingwith the rear ends of the boiler tubes or flues.

The operation of my improved furnace is as follows: The heat, flames,and products of combustion pass from the fire-box over the bridge-wall 4and strike against the baffle-wall 12, by which latter they aredeflected backward toward the bridge-wall and downward into thefire-pit, and thence rearward and upward, where they enter the boilertubes or flues and after passing through the latter escape by the usualsmoke-stack. The heated gases and products of combustion in theirpassage through the fire-pit come in contact with the entire length ofthe air-duct 9 and heat the air therein, and the heated air passes upthrough the flues 5 and 6 and is discharged through the openings 8 intothe fire-flue 7, where it mingles with the unconsumed gases, which arethus revivified by the oxygen of the heated air and are consumed. Theheat, smoke, and burned gases then pass into the fire-pit and thehighly-heated and lighter portions thereof then seek to pass through thechecker-board partition 14, where they are re tarded and the heatabsorbed by the bricks, which operate to throw-off such heat against therearportion of the boiler in a uniform and steady manner, and thus causeboth ends of the boiler to be heated equally. The heavy incombustiblegases pass up through the flue 16, then up through the flue 17 and fromthence through the boiler tubes or flues. By these means the heat fromthe fire-box is fully utilized, the gases being thoroughly consumedbefore their entrance into the boiler tubes or flues and converted intoheat. The heat is equally distributed to the under side of the boilerand held sufficiently in check to permit of its maximum heating effectbeing utilized.

In some instancesas, for example, during bad weather, when theatmosphere is heavy and laden with moisturethe natural inflow of airthrough the hot-air duct is insufficient to properly promote thecombustion of the unconsumed gases, and in such case a jet of steam isinjected into the air-duct by means of the steam-jet 11, and induces anartificial inflow of air.

The furnace constructed as above described furnishes ready access toevery part, whereby the furnace may be readily cleaned and inspected.

Having described my invention, What I claim is 1. In a steam-boilerfurnace, the combination with the fire-pit, of the bridge-wall arrangedbetween the furnace fire-box and said pit and provided with a fluecommunicating with the fire-flue by means of a plurality of openingsform ed in the rear face of the bridge wall, an air-duct arrangedlongitudinally in the furnace-pit and communicating at its rear end withthe atmosphere and at its front end with the flue in the bridge-wall, asteam-jet arranged in the air-inlet end of the air-duct, and achecker-work partition surrounding the air-duct whereby the heat isretarded and heats the air in its passage through the d not,substantially as described.

2. In a steam-boiler furnace, the combination with the fire-pit, of thebridge-wall arranged between the fire-box and said pit and provided witha flue communicating with the fire-flue in rear of the bridge-wall byaplurality of openings, an air-duct arranged in the pit and connectedwith said bridge-wall flue, and a baffle-wall arched above the pit inrear of the bridge-wall and extending entirely across the pit and nearlyto the bottom of the boiler, wherebya contracted space is formed betweensaid baffle-wall and the bottom of the boiler for the escape of thelighter burned gases, substantially as described.

3. In a steam-boiler furnace, the combination with the fire-pit, of thebridge-wall arranged between said pit and the fire-box, a baffle-wallarranged in rear of the bridge-wall above the fire-pit, and achecker-work partition arranged in rear of the baffle-wall, andextending from the bottom of the fire-pit nearly to the bottom of theboiler and consistin g of fire-bricks loosely laid as shown to formnumerous tortuous passages, and a bridgewall arranged in rear of theChGOkGP-WOlk partition, substantially as described.

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses.

EDWARD E. GORDON.

lVitnesses:

WM. H. MARTIN, THOMAS BLIND.

